WHITE PLAINS – A Warwick man was sentenced to 16 years in prison in federal court Thursday for convincing three minors to send him sexually explicit images of themselves online.

Robert Garneau, 23, also was sentenced to 15 years of supervised release.

Garneau pleaded guilty to three counts of enticement of a minor on May 25 last year before U.S. District Judge Nelson Roman, who pronounced the sentence Thursday.

According to the Manhattan U.S. Attorney’s office, between September and December of 2014, Garneau, a registered sex offender, communicated with a then-12-year-old minor in California using Instagram and Kik, a message application for cell phones. He convinced the boy to send sexually explicit photos of himself to Garneau.

He did the same thing with two other minors on July 18 and Aug. 10, 2015, the U.S. Attorney’s office said.

Posing as a minor himself, Garneau told his victims if they did not send photos and/or videos as requested, they would be arrested for photos and/or videos they had already sent.

Garneau also threatened to show one victim’s photos and videos to the victim’s Instagram followers.

He used the screen names “Raptorr427,” “BobbySixx,” “AllisonDenario” and “Giannafitz81,” the U.S. Attorney’s office said.